/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.dtstack.taier.pluginapi.http;

import org.apache.http.HttpEntityEnclosingRequest;
import org.apache.http.HttpRequest;
import org.apache.http.client.HttpRequestRetryHandler;
import org.apache.http.client.protocol.HttpClientContext;
import org.apache.http.protocol.HttpContext;

import java.io.IOException;

/**
 * 
 *
 * Date: 2017年03月10日 下午1:16:37
 * Company: www.dtstack.com
 * @author sishu.yss
 *
 */
public class RdosHttpRequestRetryHandler implements HttpRequestRetryHandler{

	@Override
	public boolean retryRequest(IOException exception, int executionCount,
			HttpContext context) {

		 if (executionCount >= 3) {// 如果已经重试了3次，就放弃
             return false;
         }

         HttpClientContext clientContext = HttpClientContext.adapt(context);
         HttpRequest request = clientContext.getRequest();
         // 如果请求是幂等的，就再次尝试
         if (!(request instanceof HttpEntityEnclosingRequest)) {
             return true;
         }
         return false;
	}

}
